单项选择题

If the students ______ the machines, they may hurt ______.

A． hold, them
B． touch, themselves
C． hit, their
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单项选择题
Is it time for ______ games
A． play
B． to play
C． playing
单项选择题
Put it down, Richard. You mustn't read ______ letter.
A． anyone's else
B． anyone else's
C． anyone else
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